rfb.gov.br is supposed to be the online home of Brazil's federal tax authority, Receita Federal. But when we tried to connect, we hit a serious problem: the SSL certificate doesn't match the domain. That means any data you send to this site could be intercepted or the site itself could be a convincing fake. While the domain registration shows the Brazilian Ministry of Economy as the owner and the domain has been around for over 14 years, the certificate is only valid for receita.fazenda.gov.br, not rfb.gov.br. For a government website that handles tax filings and personal financial data, this is a dealbreaker. The site also lacks basic contact information and legal notices you'd expect from a public service. Until the certificate issue is fixed, treat this domain as untrustworthy and avoid entering any personal information or downloading anything from it. If you need to access Receita Federal services, use the official portal at receita.fazenda.gov.br directly.
In plain English
This site is not safe to visit right now. The SSL certificate is invalid for the domain, so your browser can't establish a secure connection. Even though the domain belongs to a legitimate government ministry, the technical failure makes it impossible to trust that you’re communicating with the real site.
What you should do now
Don't panic. These steps limit the damage, and the sooner you take them the better.
Don't enter any details
No passwords, card numbers or personal information — even if the site looks professional.
Close the tab
Especially if you got here from an email, text message or social media ad.
Already paid? Call your bank
Contact your bank or card provider right away. They can often stop or reverse a recent payment.
Warn others
Report the site and share this check with anyone who sent you the link.
Where the score comes from
The SSL certificate is invalid for this domain, which means any connection to the site cannot be trusted. This is a critical failure for a government website that presumably deals with sensitive taxpayer information.
WHOIS records clearly show the domain is owned by the Brazilian Ministry of Economy, which is the legitimate operator of the federal tax authority. The domain has been active for over 14 years with strong DNSSEC protection.
No blacklist issues, a long history of over 16 years in the Wayback Machine, and moderate traffic ranking all suggest this is an established and recognized domain.
A government site should have clear contact information and an about page. Their absence here is unusual and makes it harder to verify who is running the site, despite the WHOIS ownership being clear.
No privacy policy, terms of service, or legal notices are present. For a government site handling personal and financial data, these are expected and their absence raises questions about data handling practices.
The underlying DNS, email authentication, and DNSSEC are all well-configured. But the SSL certificate mismatch undermines the entire infrastructure's reliability, making the site unreachable for secure connections.
What we checked
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